Roller-skate.



- No.-864,334. v PATBNTED AUG. 27, 1907.

P. G. PILZ.

ROLLER SKATE.

APPLICATION FILED we.1e.1eos.

Vane/flew UNI ED. STATES PATENT orrron.

PAUL GEORG PILZ, OF SGHLETTAU, ERzoEB'rneE, GERMANY.

aoLLn'n-smrn I Application filed August 16, 1906- serial HO- 830,888.

I To all whom it may concern:

Be it known'that I, Pam. Gnone PM, a citizen of the German Empire, and a resident of 'Schlet tau,

Erzgebirge, Germany, have invented certain new and useful Improvements in Roller-Skates, of which the following is a specification.

My invention relates to improvements in parlor skates of that class in which the rollers are furnished with an arresting device which permits rotation'in one direction only, viz. in the direction of skating.

The subject of the invention is a contrivance which enables the arresting device of such skates to be disengaged, so that the skate can be used, as desired, with or without the arresting device, that is to say, so that the rollers can rotate only in one direction, or in both directions. i

A further essential I improvement consists in the jspecial'form oiithe rollers, the tread-ring or tire of which presents two or more annular ridges, whereby the skate though provided with only two rollers, stands exceedingly firmly, so that the wearer can skate with more ease, while there is less liability of the feet turning 7 over at the ankle.

One form of construction of the new skate is shown in the accompanying drawing.

Figure l is a vertical section of the heel portion of the skate, with arresting-device in action. Fig. 2 is a vertical section through a roller with arresting-device disengaged. Fig. 3 is a side elevation of the roller. Fig. 4 is a horizontal section on the line H of Fig. 1. Fig. 5 is an inside view of the cover which closes the open side of the roller.

To the sole-plate a of the skate hangers ,b are secured by means of screws d, or in other suitable manner, to

' likewise fitted with such a tire.

receive the axle c. The ends of the axle c are square and fit into like-shaped holes in the hangers b, so that the axle can not rotate. On the axle c is mounted the actual body of the roller e, comprising the felly-ringf;

closed at one side. On the telly-ring there is fitted the tread-ring or tire 9, made of rubber or other suitable material and presenting peripherally two annular ridges. By this means, as already mentioned, the skate stands perfectly firmly, the front roller being The open side of the roller-body e is closed by a cover h (Fig. 5),, loosely rotatable on the axle c and having twolateral cheeks i,

which engage in correspondingly shaped recesses or pockets 1; in the interior of the roller body 0. On the axle c in the space between the body e and the cover h, there is rigidly mounted a ratchet-wheel Z, with which there engages a detent m, controlled by a spring at and pivoted to the body e. By this means the roller can only rotate for the forward motion of the skate, so that the latter can not run backward. In order, however,

to enable disengagement of the detent, and thus per- Specification o'i Letter-s Patent. 3

Patented sa e7,

mit of the skate running either onlyin one directiomor in both directions, the following contrivance is provided.

'"To an axis 0, mounted in the roller body a, there is secured a wiper p, which presses against the underside of the detent m. At the end of the axis 0 which projects from the body e, there is fixed a small crank g, by means of which the axis 0 with its wiper p can be turned and the detent m retracted from the-teeth of the ratchetwheel l, against the action of the spring n. For the purpose of securing the crank q, and therefore the'wiper p, in the end positions and thus preventing unintentional engagement or disengagement of the detent m, two indentions r are provided on the/outside 0f the roller body 0, in such manner that when the arm q is in either of its end positions, a small'projection on it snaps into one of the indentions 1'. By turning the crank-arm q into one or the other position the skate can thus be used, as desired, with or without the arresting-device;

Naturally the front roller of the skate may also. be provided with the above-described contrivance, but in general it is suificient if only one roller is so fitted. The recesses s t in the cover h serve to accommodate the free end of the pivot of the detent m and of the axis 0 of the wiper p. u is a brake-arm at the heel end of the skate; and 'v is the screw bolt which serves in wellknown manner, to adiust the clampsjaw in which grips the boot-heel.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

1. In a roller skate, in combinations stationary axle, a hollow roller rotating on the latter, an arresting-device for preventing rotation of the roller in a direction contrary to that of propulsion of the skater and arranged within the said hollow roller and means for disengaging the said device also arranged within the roller, substantially as described.

2. In a roller skate, in combination, a stationary axle; a hollow roller rotating thereon; a ratchet-wheel secured to the axle, inside the roller; :1 spring-actuated detent pivoted inside the latter and engaging with the ratchet wheel; and means for disengaging the detent from the wheel; substantially as described.

i. In a roller skate, in combination, a stationary axle; a hollow roller rotating thereon; a ratchet-wheel secured to the axle, inside the roller; a spring-actuated detent pivoted inside the latter and engaging with the ratchetwheel; a wiper axis mounted in the roller; and a wiper secured thereon and retracting the detent from the ratchet wheel on rotation of the wiper-axis; substantially as described; Y

4. In a roller skate, in combination, a stationary axle; a hollow-roller rotating thereon; a ratchet-wheel secured to the axle, inside the roller; a spring-actuated detent pivoted inside the latter and engaging with the ratchetwheel; a wiper axis mounted in the roller; a wiper secured thereon and retracting the detent from the ratchetwheel on rotation 01? the wiper-axis; and means at the end of the latter for turning the same and for retaining the wiper in its end positions; substantially as described.

the roller a wiper securedthereon and retracting the 5. in a rolier skate, in combination, a stationary axle;

*detent from the ratchet-wheel on rotation of the wiper a hollow roller, having indentions on one side, rota-ting thereon; a ratchet-wheel secured to the axle, inside the 'roller; a spring-actuated detent provided inside the Int- 5 ter and engaging with the ratchet-wheel; a wiper-axis mounted in the roller; a wiper secured thereon and retracting the detent from the ratchet-wheel on rotation of, the wiper-axis; and of spring-actuated crank at the end of the wiper-axis'having a projection which engages in 10 the indentions in the roller substantially as described,

6. In a roller-skate, in combination, a stationary axle; a hollow roller, having internal pockets. rotating thereon; a ratchet-wheel securedto the axle, inside the roller-7 a spring-actuated. detcnt provided inside the latter and en- 15 gaging with the ratchet-wheel; o. wiper axis mounted in and for retaining the wiper in its end positions; and a cover mounted on the axle, closing in the arresting-mom'- anism, and having two cheeks, which fit into the pockets in the roller, and two recesses to receive the axes of the detent and the wiper; substantially as described.

this 31st day. 0t July,. 1906. PAUL GEORG PILZ.

' In presence of- CAM. Bonxonannnn, Gmoo MULLER.

axis; means at the end of the latter or turning the same The foregoing specification signed at An-naberg, Saxony, 

